Plot Summary

Kat makes himself invisible and causes trouble for Coop on the night he invites Fiona to dinner, and on the night Dad invites Coop's teacher over for dinner.

Trivia

Coop is briefly naked when Fiona is looking at him and his towel slips off, though invisible at the time, he had previously stated that he still thought it embarrassing when Fiona asked him to give her his towel to tie around Growler (he instead tore a strip of blue curtain)